Machine for shaping heels of lasts



(No Model.)

A. G. FITZ.

MACHINE FOR SHAPING HEELS 0P LASTS.

Patented Aug. 31,1897.

WITNESSES:

635K. m QM ATTORNEY.

AMOS e. rir z, or

PATENT Fries.

AUBURN, MAINE.

MACHINE FOR SHAPING HEELS OF LASTS.

SPECIFICATION formingpart of Letters Patent No; 588,971, dated August31, 1897.

' Application filed March 11, 1897. Serial No. 626,981. (No model.)

face whose outline is governed by a pattern attached to the machine. InUnited States Patent-No..541,158, issued June 18, 1895, and

inUnited States Patent No. 574,604, issued January 5, 1897, I havedescribed machines of this sort in which all lasts of a set are trimmedfrom the same pattern.

A principal objectof this my present invention is to provide a machinein which the above-m ention ed result is attained by simpler means.

Myinvention consists,pri1narily,in the combination,with a heel-patternattached to a lastsupport and rocking therewith, of a series of convexbearing-surfaces corresponding to different sizes.

In the accompanying drawing I have only shown as much of the machine asis necessary to show the working of my invention. The machine is inother respects similar to Patent No. 574,604 above mentioned.

In the drawing, F is the frame of the machine. 1

Wis a swinging support for the last pivoted to a pair of swinging arms,as A,which project from a sleeve D on a horizontal rod E. The pattern Mis attachedto the upwardly-projecting part K of the swinging. supportIV. It should be so attached as to be readily. ad-' justable, and Iprefer to use the construction shown and claimed in my above-mentionedpatents, and in that case the vertical position of M would be adjustedby turning the handle II. Opposite M are a series of curved patternsformed on the outer edge of the same disk, which act, as hereinafterexplained, to change the shape of the heel to correspond with differentsizes. Of these patterns L L L L are for sizes larger than the patternlast of a set, and S S? S S are for smaller sizes. These patterns may bemade to change the shape of the different sizes of a set in anyarbitrary manner desired,but I have shown them as arcs of circles, eachof which at its middle point projects beyond or falls short of a circledrawn from the center of the disk of which it forms part for a distanceequal to the greatest difference between the desired outline of the heelof that size and that which would be given it if copied direct from thepattern M.

If z? W are holes corresponding to L L L L.

1/0 4) 41 are holes corresponding to S S S S A pin m in the swinging armZ enters these holes and holds the corresponding curve opposite M. Thepin m is lifted out by pressing down the handle II, when any other curvedesired may be brought into position in front of M. The swinging arm Zis connected by the rod R with the slide S. The rod R connects S withthe piece-B,Which isattached to K by a pivot at P in the line of centersabout which the support W swings. The piece 0 is rigidly attached to Kand connectedto B by the screw N, which is'turned by the handle H 0 is asupport for the heel of the last,which may be adjusted vertically in anyconvenient manner. I have shown a construction similar to that of myprevious patent, No. 574,60l.

- When I wish to make use of my invention, I first adjust the last andthe pattern Mto the same angle in the manner set forth in my previouspatents. I then place the heel of the last upon the outer end of B andturn the screw N until the last will just slip under the rounded end ofO. The resulting motion of B is transmitted through the rods R R, slideS, and rocking arm Z to the correcting-pattern, which has previouslybeen brought into its working position in front of M, and raises orlowers it until its middle point is brought opposite the middle point ofthe last when replaced upon WV, thus bringing the greatest amount ofcorrection at the point where it is needed.

The circular arcs shown will in most cases give an approximation to aperfect form which comes well within the limits of ordinary workmanship,but'whenever found necessary specially-designed curves can be used,whichcorrect a particular style more closely.

Having now fully described my invention and the manner of using it, whatI claim, and desire to secure by Letters Patent, is

1. In a machine for shaping the heels'of lasts, the combination of aheel-pattern attached to the lastsupport and rocking therewith with arocking correcting-pattern whose working edge is in contact with that ofthe heel-pattern, and has a curvature eccentric to the axis about whichit rocks; all as set forth.

2. In a machine for shaping the heels of lasts, the combination with arocking lastsupport of a heel-pattern adj ustably attached thereto and aseries of correcting-patterns which form part of the circumference ofthe same disk and are constrained to move in operative relation to theheel-pattern, all as set forth.

3. In a machine for shaping the heels of lasts, a rocking support forthe last, a heelpattern attached thereto, a series ofcorrecting-patterns turning about the same center, a rocking arm, meansof attaching the rocking arm to either of the patterns, a sliding piece,a rod connecting it with the rocking arm and a second rod transmittingto it the motion of the rocking support for the last, all combined witheach other as set forth.

i. In a machine for shaping the heels of lasts, a rocking support forthe last, a heelpattern attached thereto, an arm rigidly attached to therocking support above the line of centers about which it rocks, a secondarm pivoted to the rocking support at the line of centers, means ofadjusting the distance between the outer ends of these two arms tocorrespond to the heel depths of different lasts, a correcting-patternand means of connection between the inner end of the lower arm and thecorrecting-pattern, all combined with each other as and for the purposeset forth.

5. In a machine for shaping the heels of lasts a rocking support for thelast, a heelpattern attached thereto, a vertically-adjust able supportfor the toe of the last, a correcting-pattern which is in operativerelation to the heel-pattern, and means of connection between thelast-support and the correctingpattern; all as set forth.

In testimony whereof I have hereunto set my hand, in the presence ofthese witnesses, this 9th day of March, 1897.

AMOS G. FITZ.

\Vitnesses:

JOHN A. JoNEs, N. M. EMERY.

